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Implement addressing mode 1 ROR immediate
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@ -64,7 +64,14 @@ static inline void _shiftASRR(struct ARMCore* cpu, uint32_t opcode) {
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static inline void _shiftROR(struct ARMCore* cpu, uint32_t opcode) {
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int rm = opcode & 0x0000000F;
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int immediate = (opcode & 0x00000F80) >> 7;
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ARM_STUB;
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if (immediate) {
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cpu->shifterOperand = ARM_ROR(cpu->gprs[rm], immediate);
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cpu->shifterCarryOut = cpu->gprs[rm] & (1 << (immediate - 1));
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} else {
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// RRX
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cpu->shifterOperand = (cpu->cpsr.c << 31) | (((uint32_t) cpu->gprs[rm]) >> 1);
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cpu->shifterCarryOut = cpu->gprs[rm] & 0x00000001;
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}
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}
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static inline void _shiftRORR(struct ARMCore* cpu, uint32_t opcode) {
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